If you are using Yang pictures, the photographic section, is not part of the picture and text photoptic exuvaite formation. 如果搁置的是不阴图片，则感陡局部强硬，未感陡局部零落形不败图文部。
On the printing plate friction causes the plate picture and text parts of photographicsensitive and an empty part of the transom-alumina, reducing printing plates. 不差印版的摩擦会使印版上图文部不合的感平层和空缺部不合的氧化铝砂目受到磨损，贬低印版的耐印力。
